Drying-oven.



PATEN'IED JULY 21, 1908.

2 SHEETS-SHEET 1.

PATENTED JULY 21, 1908 J. HORNER. DRYING OVEN. APPLICATION FILED AUG. 7, 1907.

2 SHEETS-SHEET 2.

, Immw Jofin ]/0 77267" I I 4% "'ZM accordance with my JOHN HORNER, OF BRISTOL, PENNSYLVANIA.

DRYING-OVEN.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed August 7 1907. Serial No. 387,410.

To all whom it may concern:

Be it known that I, JOHN HORNER, a citizen of the United States, residing at Bristol, county of Bucks, and State of Pennsylvania, have invented a certain new and useful Improvement in Drying-Ovens, of which the following is a specification.

My invention relates to a new and useful improvement in drying ovens, and has for its object to provide an exceedingly simple and eifective construction of such an oven by which the molds for casing pipe may be properly dried, and a further object of my invention is to provide for directing the hot air or other products of combustion through the interior of a series of molds and then carrying the same off through a flue or chimney.

With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, inwhich Figure 1 is a front view of an oven made in improvement showing three sections thereof. Fig. 2, a longitudinal section of one of the ovens. Fig. 3, an enlarged detail section of the floor of the oven showing the ports and port plugs fitted therein. Fig. 4, an enlarged vertical section of a mold casing showing the mold therein before the pipe is cast. Fig. 5, a cross section of one of the ovens illustrating the arrangement of the draft outlet;

In carrying out my invention as here embodied, A represents the oven, having the floor B in which is located any suitable num ber of ports or recesses C, over which the large end of the mold casing D containing the mold E is placed. This floor is supported upon the girder or I-beams F thus forming a space there beneath and this space is connected by the flue G with the furnace H, the latter being of any suitable construction, but here shown as reverberating the products of combustion passing around the arch shaped dome and downward through the flue G to the space beneath the floor. From thence these products of combustion pass upward through the interior of the molds E and issuing from the top thereof pass through the down-take I to the flue J which connects with any suitable stack and may be pro vided with an exhaust fan for facilitating the draft when it is not desirable to have a stack of sufiicient height to create the proper draft. When all the ports are not occupied by molds, I close these unoccupied ports with the plugs K so as to prevent the products of combustion from flowing through these unoccupied openings.

One of the advantages of my improvement is that by permitting the products 'of combustion to enter the molds at their lower ends the greatest heat will be imparted to these lower ends and as the greatest amount of moisture is always at the lower ends of the molds it will facilitate drying the molds evenly throughout their length.

While I have shown the furnaces H located above the floor level, if found desirable they may be located below the floor level thus further increasing the force of the draft.

Having thus fully described my invention, what I claim as new and useful, is

An oven of the character set forth composed of a large main central chamber having an apertured floor, there being a space beneath said floor, a furnace located at one end of said chamber having a vertical flue which communicates with said space beneath the floor, the opposite end of said chamber being formed with a vertical flue which extends the height thereof and which has an opening at its top leading into said chamber and an opening at its base on the exterior of the chamber.

In testimony whereof, I have hereunto affixed my signature in the presence of two subscribing witnesses.

' JOHN HOBNER. Witnesses:

JoHN-BYRoN JOHNSON, CARL GUsTAF WESTERBLAD. 

